Răspuns:
2) a) 5 | 45
b) 7 | 63
c) 14 nu divide 2
d) 9 | 36
e) 65 nu divide 13
f) 17 | 85
g) 2 nu divide 0
h) 0 nu divide 0
3) a) 12 : 4
b) 19 | 38
c) 20 : 4
d) 63 : 7
e) 13 | 91
f) 84 : 14
g) 17 | 102
h) 121 : 11
4) a) D10 = {1,2,5,10}
b) D6 = {1,2,3,6}
c) D24 = {1,2,3,4,6,8,12,24}
d) D35 = {1,5,7,35}
e) D84 = {1,2,3,4,6,7,12,14,21,28,42,84}
f) D100 = {1,2,4,5,10,20,25,50,100}
g) D42 = {1,2,3,6,7,14,21,42}
h) D60 = {1,2,3,4,5,6,10,12,15,20,30,60}
5) a) a = {0}
b) b = {0}
c) c = {0,1,2,3,4,5,6,7,8,9}
d) x = {0,1,2,3,4,5,6,7,8,9}
d = {0}
6) a) a = {0,2,4,6,8}
b) b = {0,1,2,3,4,5,6,7,8,9}
c) c = {0,2,4,6,8}
d) d = {1,2,3,4,5,6,7,8,9}
7) a) a = {0,5}
b) b = {0,1,2,3,4,5,6,7,8,9}
c) c = {1,2,3,4,5,6,7,8,9}
d) d = {0,5}
8) a) a = {0,3,6,9}
b) b = {1,4,7}
c) c = {1,4,7}
d) d = {2,5,8}